Sweep & inspection
Caps & crowns
Flue relining
Masonry repair
Gas fireplace serviceLevel 1 sweep and inspection to the NFPA 211 annual standard - flue, crown, cap, and flashing checked and photographed
Chimney sweep logs do not sweep chimneys. They loosen some creosote - which then falls where a brush and vacuum still have to collect it.
DuraFlex Chimney Cleaning in Ontario, CA
DuraFlex chimney cleaning in Ontario usually means one of two things: a factory-built fireplace that’s gone years without inspection, or an older masonry chimney with a clay flue that’s quietly failing. We’re an independent DuraFlex service provider covering all four Ontario ZIP codes (91764, 91798, 91758, 91761), and the work here looks different than it does in neighboring cities. That’s because Ontario’s real chimney problem isn’t creosote buildup from wood fires. It’s dry heat cycling and settling ground cracking clay flue tiles before anyone notices. Call (877) 358-0941 to book a DuraFlex inspection and cleaning, and we’ll show you what’s actually happening inside your flue.
Why Ontario Residents Choose Us for DuraFlex Service
Most companies in Ontario that advertise chimney service don’t actually know DuraFlex systems beyond the nameplate. We do. Our owner, Noel Strickland, came up through the HVAC and building trades program at Chaffey College in Rancho Cucamonga before focusing on chimney work, and he’s spent nearly two decades diagnosing venting problems across the Pomona Valley. That background matters when a DuraFlex direct-vent gas fireplace isn’t drafting right, or a factory-built wood unit has a stainless liner that’s separating at a seam. We don’t run a manufacturer checklist and call it an inspection. We pull the logs, run a camera through the flue, and show you what we find before we recommend anything. We stock OEM DuraFlex parts for critical venting and firebox components, plus quality aftermarket liners and caps that meet or exceed spec when OEM isn’t available. For Ontario homeowners who’ve been burned by a sweep-and-run outfit, that transparency is why they call us back. Our full DuraFlex sales & service scope covers cleaning, inspection, and repair across Ontario, so you’re not juggling multiple contractors.
Styles & brands we work with
- Sweep & inspection
- Caps & crowns
- Flue relining
- Masonry repair
- Gas fireplace service
Common DuraFlex Chimney Cleaning Problems We Solve in Ontario
- Cracked and spalled firebox panels from decades of dry Inland Empire heat cycling. This shows up constantly in 1950s and 60s tract homes where a wood fireplace was converted to gas logs. The firebox was built for wood temperatures, not gas, and the refractory panels give out. We see this on the east side of Ontario more than anywhere else.
- Clay flue tiles that crack as the ground settles under hot, dry conditions. Ontario’s soil expands and contracts with heat more than people realize, and older homes in 91761 and 91764 are especially prone. Homeowners switch to gas logs without realizing the flue no longer vents safely, and a simple sweep won’t catch it. A Level 2 camera inspection will.
- Crown and flashing failure exposed by the first real winter rain. Months of Santa Ana winds bake chimney crowns, and wind-driven grit wears down the mortar joints. When rain finally hits in December or January, water finds every crack. We recrown, repoint, and waterproof before the leak becomes a ceiling stain.
- Seized dampers and corroded caps on prefab DuraFlex units. Wind-blown grit in Ontario gets into the damper track and jams the mechanism. Caps corrode from constant sun exposure. These are cheap fixes if caught early, and expensive ones if ignored.
- Improper gas log venting after a DIY or handyman install. We regularly find gas log sets installed without verifying flue condition first. In Ontario’s older housing stock, that’s a carbon monoxide risk, not just a draft problem.
DuraFlex Service in Ontario: What Local Conditions Mean for Your Equipment
Here’s the thing about chimney work in Ontario that you won’t hear from a generic DuraFlex dealer: the east and south sides of this city sit on soil that shifts more than the rest of the Inland Empire, and the original clay flue tiles in those 1940s through 60s homes crack as the ground settles in the dry heat. That’s a real, observable pattern. When a homeowner switches from wood to gas logs, the flue often stops venting safely because those cracked tiles create gaps that let exhaust escape into the attic or wall cavity. A Level 1 inspection, which is what most “chimney cleaning” visits actually are, won’t find this. You need a Level 2 camera inspection, and that’s exactly what we recommend for any Ontario home with a clay flue that’s switching fuel sources or hasn’t been inspected in five-plus years. A clean flue isn’t a luxury – it’s just what keeps the fire in the fireplace and out of the walls. Noel Strickland and our techs have seen enough of these failures in Ontario’s mid-century neighborhoods that we treat every older masonry chimney as a potential venting problem until proven otherwise.
DuraFlex Models & Products We Service in Ontario
We service the full range of DuraFlex chimney systems you’re likely to find in Ontario homes. That includes DuraFlex direct-vent gas fireplace systems, where we check the vent run, termination cap, and firebox condition. It includes DuraFlex wood-burning factory-built fireplaces with stainless liners, where we look for liner separation, warping, and creosote buildup in the smoke chamber. And it includes DuraFlex insulated flexible stainless liner kits, which we install when an older clay flue in Ontario has failed beyond repair and needs a full reline. Our DuraFlex sales & service approach is simple: we use OEM parts when the manufacturer’s spec matters most, and we use aftermarket components when they meet or exceed the original. This keeps turnaround fast for Ontario customers, because we’re not waiting on backordered parts for a repair that could have been done with an equal-quality alternative.
See the difference
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After
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After
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AfterDuraFlex Service Pricing in Ontario
DuraFlex chimney cleaning and inspection in Ontario typically runs $189 to $349 depending on the system type and whether it’s a Level 1 or Level 2 inspection. A standard cleaning with a Level 1 inspection on a factory-built DuraFlex fireplace is on the lower end. A Level 2 camera inspection, which we strongly recommend for older Ontario homes with clay flues or any unit that’s switching fuel sources, runs $249 to $399 and includes a written report with photos. Firebox panel replacement typically adds $280 to $650 depending on panel size and access. Full stainless liner installation for a failed clay flue starts around $1,850. Your free estimate covers the camera inspection so you know exactly what you’re paying for before any work starts. Call (877) 358-0941 and we’ll walk you through it.
Serving Ontario, CA – Our Local Coverage Area
We’re based in the Ontario area and know this community well. Use the map below to see our service coverage – if you’re nearby, we can almost certainly help.
FAQs – DuraFlex Chimney Cleaning in Ontario
Yes, and in Ontario it’s arguably more important than in wood-burning homes, because gas log conversions in older masonry chimneys often vent through clay flue tiles that were already cracked from dry heat settling. A gas log set needs a clean, sound flue to vent carbon monoxide outside. If the flue has gaps, you won’t see it. We find this constantly in Ontario’s 1950s and 60s tract homes. Call (877) 358-0941 for a Level 2 camera inspection – it’s the only way to know if your gas log set is venting safely.
For a DuraFlex factory-built wood fireplace in Ontario, once a year if you burn regularly during the mild winter season. The Inland Empire’s dry climate doesn’t create the heavy creosote you’d see in damp coastal areas, but wind-driven grit and debris still accumulate in the cap and flue, and that grit accelerates component wear. Gas units can go two to three years between inspections, but the venting should still be checked annually if you use it as a primary heat source.
A Level 1 inspection is a visual check of accessible portions of the chimney without special tools. A Level 2 inspection includes a camera run through the full flue and is required by the NFPA when you’re changing fuel types, selling a home, or after a chimney fire. For Ontario homes with older clay flues, we recommend Level 2 every time because the failures we see most often – cracked tiles, gaps behind the firebox, separated liner sections – are invisible to a Level 1 check. Call (877) 358-0941 and ask for a Level 2 inspection, especially if you’re switching to gas logs.
Usually, yes. A cracked or spalled refractory panel is a repairable condition in most DuraFlex factory-built fireplaces, and it’s one of the most common repairs we do in Ontario’s older tract homes. We replace the damaged panel with an OEM or spec-matching aftermarket panel, repoint the surrounding refractory mortar, and verify the flue is still sound. Full unit replacement only comes into play when the firebox shell itself is compromised or the flue liner has failed beyond relining. We’ll show you the camera footage either way before recommending anything.
Because months of Santa Ana winds and dry heat bake the mortar crown until micro-cracks form, and when winter rain arrives, water seeps into those cracks and follows the path of least resistance into your ceiling or attic. The fix is recrowning with a proper overhang, sealing the flashing, and often applying a waterproofing treatment to slow future weather damage. For Ontario homes with original masonry chimneys, this is a maintenance item every 8 to 12 years. Call (877) 358-0941 and we’ll inspect it before the next rain cycle starts.
Service Areas Near Ontario
We provide DuraFlex chimney service throughout Ontario plus the surrounding areas, including Pomona and Rancho Cucamonga.
If you’re in a neighboring city, see our DuraFlex service in Pomona page.
Or visit DuraFlex service in Rancho Cucamonga for coverage there. We also serve Chino, Chino Hills, and Corona. Our Ontario service area page has full ZIP code details.
Book Your DuraFlex Service in Ontario Today
If your Ontario home has a DuraFlex fireplace that hasn’t been inspected recently, especially if it’s an older home with a clay flue, call us. We’ll schedule a cleaning and Level 2 inspection, show you the camera footage, and tell you honestly what needs work and what can wait. (877) 358-0941 for a free estimate.
Written by Noel Strickland, Owner at Chimney Sweep Chino Hills, serving Ontario since 2017.